The glass bubble that ran out of breath
Ancient secrets of the three sisters
The town of forty-five trash bins
Surviving on cosmic drops
YOUR GOAL
Master of The survival guide for a self-sustaining planet
007skaty The facility's compost and peat soil amendments triggered an explosion of microbial respiration, releasing carbon dioxide and consuming
007skaty Holographic neon scans reveal invisible gas escaping through the dark habitat walls.
007skaty Balance plants and animals in the glass bubble to learn how closed ecosystems recycle air.
Concrete carbon trap: The concrete walls of Biosphere 2 absorbed so much carbon dioxide that they literally turned the gas into limestone.
The part of the Earth's crust, waters, and atmosphere that supports life. In 1991, eight scientists entered an artificial biosphere in Arizona to test human survival in closed environments.
In what month and year did the Biosphere 2 team finally have to inject outside oxygen to rescue the struggling crew?
What chemical reaction in Biosphere 2's concrete walls permanently trapped carbon dioxide as calcium carbonate?
In which US state was the sealed ecosystem experiment Biosphere 2 constructed in 1991?
What was the main reason plants inside the sealed Biosphere 2 dome could not keep up with the oxygen demand?
What mineral did the carbon dioxide turn into when it reacted with the concrete walls of Biosphere 2?
What organism in the Biosphere 2 soil consumed massive amounts of oxygen, disrupting the sealed dome's atmospheric balance?
How many biospherians entered the sealed Biosphere 2 facility for the first two-year mission in 1991?